manegold and g



R. A. MANEGOLD AND G. H. FOBIAN.

MAGNETIC SEPARATOB. Y

APPLICATION FILED MAR. 30, I91?- 1,310,92. Patented July 22, 1919.

2 SHEETS-SHEET l.

Eni/hd WITNESSES: INVENTOR 0/ WWW af fl 2% 526m? ATTORNEYS R. A.MANEGOLD AND G. H. F OBIAN. MAGNETIC SEPARATOR.

APPLICATION FILED MAR. 30. 1917.

2 SHEE'i'S-SHEET 2.

INVENTOR M W/V/ TORNEY3 UNITED STATES PATENT oFrIoE.

I ROBERT A. MANEGOLD AND GEORGE H. FOIBIAN, OF MILWAUKEE, WISCONSIN,ASSIGNORS T0 DINGS MAGNETIC' SEPARATOR, COMPANY, OF MILWAUKEE,

wrsoonsm, A; CORPORATION or wrso'onsnv.

MAGNETIC SEPABATOR.

Application filed March- 30, 1917. Serial No. 158,586.

To all whom it may concern:

Be it known that we, ROBERT A. MANEGOLD and GEORGE H. FOBIAN, citizensof the United States, residing at the city of Mil waukee, county ofMilwaukee, and State of Wisconsin, have invented new and usefulImprovements in Magnetic Separators, of which the following is aspecification.

Our invention relates to improvements in magnetic separators.

The object of our invention is to provide means for utilizing anon-magnetic carrierrotating substantially in a horizontal plane througha magnetic field of high intensity to convey magnetic material out ofsaid field, and deposit it in a suitable hopper or'receiver, wherebymaterial (including both magnetic and non-magnetic material) may beconveyed-into the magnetic field by any suitable conveyer, such, forexample, as an endless belt or apron extending underneath said rotarycarrier, and the magnetized material lifted from the apron or belt intocon-- tact with said horizontally rotating carrier and held in contacttherewith by magneticattraction, until conveyed by the carrier beyondthe zone or field of magnetic influence, or to a point where themagnetic attraction is no longer sufiicient to retain the magnetiteagainst the under side of such carrier.

We are aware of the fact that horizontally rotating conveyers, providedwith pole pieces which become induction magnets by traversing themagnetic field, have heretofore been used to lift and convey magnetitefrom a traveling apron, or other form of conveyer, stationary magnetsbeinglocated above and below the conveyer, and arranged to establish amagnetic field traversed by the conveyer and by the induced magnets ofthe horizontally rotating carrier. But, our invention has for its objectto provide a form of construction in which powerful stationary magnets,or their pole pieces, may. be brought into close proximity to the.apron, leaving a narrow gap between the upper and lower pole piecesthrough which the apron may magnetizable disk revolving in extremelyclose proximity to the lower surface of the upper pole piece, or polepleces.

Specification of Letters Patent.

Patented July 22,1919.

thickness of which has been reduced to a minimum.

In the drawings Figure 1 is a side elevation of a magnetic separator,embodying our invention, with a portion of thehorizontally rotatingcarrier illustrated in section 'andfpart of the frame broken away.

Fig; 2 is an-end elevation, also showing a portion of the carrier insection, and a portion of one of' the receiving chutes in section.

Fig. 3 is a detail plan View of the horizontally rotating carrier on areduced scale, showing the pole pieces of the upper magnet in horizontalsection.

Like parts are identified by the same reference characters throughoutthe several views.

The material to be separated by removing the magnetizable portion,herein referred to as magnetite, is fed from ahopper l to the uppersurface of the revolving apron 2,-

whereby the materialris conveyed by the apron in the direction indicatedby the arrow in Fig. -1, the non-magnetic material being delivered atthe rear end of the apron, where it' passes over a drum 3. The front endof the apron is supported by a similar drum 4'. Feeding mechanism in thehopper 1, of any desired type, maybe actuated from a shaft 6 of the drum4, by means of a sprocket chain 8 operating over sprocket wheels 9andlO. Theconveying portion (or upper horizontal portion), of the apronextends over a set of idle rollers 12, the shafts 13 of which arejournaled in vertically adj ustable bearings 14, these bearings beingadjusted by means of screws 15 to raise or lower the shafts and rollers12, whereby that portion of the apron between the front and rear rollers12 maybe accurately supported in the desired horizontal plane.

A stationary magnet 16 is provided with pole pieces 17 4 projectingdownwardly from each end of the magnet into close proximlty to the apron2, the lower ends of these'pole pieces being preferably provided withseg mental ribs 19.; These ribs are preferably V shaped in crosssection, whereby the lines a of force may 'be concentrated along theedges 111g carrier annulus 25.

' The carrier is sup orted and actuated by a depending shaft 2 Thecentralportion comprises a disk 28 which may be suitably reinforced byribs 29. *The annulus 25 is supported from the disk 28 by a thickenedsupporting annulus 30, and'the outer margin of the annulus 25 isprovided with an upturned flange 31, preferably inclined outwardly, asshown. This flange 31 stifiens the annulus 25, which can be made verythin since it is subjected to but little strain.

It'will be observed that the annulus 25 is interposed between the olepieces .17 and the working portion 0? the apron 2. The magnetite islifted against the under surface of this annulus 25 while traversing theinagnetic field. The most powerful attraction, will, ofcourse, beexerted when the magnetite passes directly underneath the-V shapedsegmental ribs 19. A. lu-

rality of ribs are preferably employs on each pole iece in order thatthe material may be su jected to more than one powerful magnetic pullwhile traversingthe magnetic field. The removal of the more stronglymagnetic materials will be accomplished by the first magnetic pull, andthis causes some agitation of the non-magnetic material whichfrequently, partiallyor wholly, covers the magnetite. The less magneticmaterial will be shifted so as to expose its more strongly magneticportions to the action of the second rib 19. This shifting movement iscaused in part'by the agitation above referred to while the material issubected to magnetic influence. Further agitation will also result onaccount of the raking efi'ect ofthe magnetite: which is traveling withtheannulus 25, and the apron is made wide enough to permit the materialto be thus dragged laterally without discharging the non-magnetic.material from the side margins of the apron. This, dragging effect, ofcourse, tends to distribute the 'material, over a wider area upon theapron, thereby also more effectually exposngthe materlal to the actionof the second rib 19. The material will be also subjected I not.

to further separation while passing underneath the rear pole piece 19,if the magnets are arranged, as illustrated in the drawings, since theapron passes underneath both pole pieces of the magnet16. I

The diameter ofthis-horizontally rotating carrier, composed of disk 28-annulus 25 'and its supporting portion 30, 1s greater than the width ofthe apron 2, and is suf- .ficient .to allow the annulus 25 to drop themagnetite beyond the side edges of the apron, while traversing theneutral zone.

The machine is driven from any su table source of power applied througha main driving pulley 35, this pulley beingmounted on overhead crossshaft 36, I suitably geared at 37 to the vertical shaft 27 whichsupports the horizontally rotating carrier 28-25. This shaft 27preferably passes downwardly betwee'nthe winding spools 16 of the magnet16, and it may have bearings in the bars 40 and 41 of the magnet frame.The magnet 16 may be adjustably' supported from overhead frame bars 43,by means of hanger screws'42. These screws allow the magnet 16 to beraised or lowered.

The apron 2 is driven from shaft 36 by 7 means of a belt'or chain 45passing over pulleys or sprocket wheels 46 47 respectively. i

It will be observed that we have provided receiving chutes 50 havingflaring upper ends to receive the magnetite dropped from the conveyingannulus 25 while traversing the neutral zones between the respectivepole pieces of the magnet 16. Thesechutes deliver the magnetite at thesides of the machine, or into any suitable "receiver, whereas the'non-magnetizable material is discharged at the rear end of-the' apron2, as above stated.

It will, of course, be understood that the annulus 25 is not only formedof non-magnetizable material, but that its supporting disk 28 will alsobe preferably formed of apron 2 and also the idle rollers 12 arenonmagnetizable, the lines of force bein there- .fore concentratedacross the gap tween the pole pieces of the electro-magnet, and the polepieces 24 of the induced magnet below the apron. It is not essentialwhether the magnet below the apron be wound or i If wound, the polepieces must, of course, be of opposite polarity from the opposedpolepieces above the apron.

7 We claim:- v

1'. magnetic separator, including'the combination with a main'horizontally'disposed conveyer forthe material to be se arated, of amagnethaving segmental po l's pleces and a coiiperating inductor magnetarranged to' establish a magnetic field 15 to convey magnetizablematerial from the main conveyer while maintaining a magnetic gap ofminimum dimensions and maximum intensity.

2. A structure as set forth in claim 1, in which the cross conveyer isalso pro- 20 vided with a stiffening rib adjacent to the interior edgeof the annularportion, and the outer Ilm being conically expanded to itsupper margin.

In testimony whereof I aflix my signature 25 in the presence of twowitnesses.

ROBERT A. MANEGOLD. GEORGE H. FOBIAN.

Witnesses:

EDGAR F. BRUCE, L. Sens.

